Precautions for purchasing steel fire doors

Nowadays, there are various types of steel and wood fire doors in the market, and there are also significant differences in prices. Some businesses sell substandard goods and upscale products for personal gain, deceiving customers who do not understand steel and wood fire doors, which greatly affects the order of the industry. So customers should pay attention to the following points before purchasing steel and wood fire doors.

Line materials: Currently, the lines on the market are mainly divided into three categories: 1. Wood plastic lines: Wood plastic substrate surface coating (PVC) or sticker paint. Due to the use of bonding technology on its surface, it is easy to fall off between the veneer and the substrate during use, resulting in surface blistering and easy pulverization of the wood plastic substrate; 2. Plastic steel line: The surface of plastic steel substrate is coated with a film (PVC). Due to the use of a bonding process on its surface, it is easy to detach between the veneer and the substrate during use, resulting in surface blistering and other phenomena.

The surface treatment process of the door leaf: transfer printing and baking paint process: the steel plate is treated with phosphating solution for corrosion prevention → the bottom surface of the steel plate is sprayed with plastic → baking → the wood grain is heated and transferred to the paint on the bottom surface of the steel plate → baking → the surface adopts the car baking paint process. The performance is relatively stable.

The thickness of steel plate reflects the product quality. Due to the diversification of market prices, the thickness of steel plate is also different. If the product surface is flat, smooth and stable, the thickness of steel plate should be 0.5mm and above, and its anti-collision and impact resistance can achieve good results.